Thermal conductivity of compressed H_2O to 22 GPa: A test of the Leibfried-Schlömann equation

Creators: Chen, Bin; Hsieh, Wen-Pin; Cahill, David G.; Trinkle, Dallas R.; Li, Jie

Abstract

The Leibfried-Schlömann (LS) equation, a commonly assumed model for the pressure dependence of thermal conductivity Λ, is tested by measurements on compressed H_2O using a combination of the time-domain thermoreflectance method with the diamond anvil cell technique. The thermal conductivity of ice VII increases by an order of magnitude between 2 and 22 GPa, reaching Λ≈25 W m^(-1) K^(-1). Over a large compression range of ≈4%–33%, the LS equation describes the pressure dependence of Λ of ice VII to better than 20%.

Additional Information

© 2011 American Physical Society. Received 8 February 2011; published 14 April 2011. We thank Catalin Chiritescu and Gideon Bartov for their assistance with the experiments. Comments by anonymous reviewers improved the manuscript. This work was supported by Carnegie DoE Alliance Center (CDAC) through DOE/NNSA Grant No. DE-FC52-08NA28554, and by the National Aeronautics and Space Administration Grant No. 655 NASA NNX09AB94. B.C. acknowledges support from California Institute of Technology. W.-P.H. acknowledges support from the National Science Council (Grant No. NSC-095-SAF-I-564-005-TMS), Taiwan, Republic of China. The computational research was supported in part by the National Science Foundation through TeraGrid resources provided by TACC.

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